a{color: black;}
.top div{position: fixed;left: 50px;top: 20px;font-size: 16px;}
.top .rr{position: fixed;left: 1250px;top: 20px;font-size: 16px;}
.cent{width: 500px;margin: 70px auto;}
.cent h2{font-size: 32px;margin-bottom: 20px;} 
.centt span{margin-left: 15px;font-size: 14px;} 
.centt span::after{
    content: "i";
    border-radius: 50%;
    background: blue;
    display: inline-block;
    width: 15px;
    height: 15px;
    margin-left: 15px;
    text-align: center;
    color: #fff;
    cursor: pointer;
}
.icd{width: 400px;height: 40px;background: #f4f4f4;margin-top: 10px;border-radius: 20px;}
 .icd input{width: 240px;height: 40px;background: #f4f4f4;margin-left: 20px;box-sizing: border-box;border: none;}

.pas span{margin-left: 15px;font-size: 14px;} 
.icdd{width: 400px;height: 40px;background: #3E6AE1;margin-top: 30px;border-radius: 20px;}
.icdd input{width: 350px;height: 40px;background: #3E6AE1;margin-left: 20px;box-sizing: border-box;border: none;text-align: center;color: #fff;cursor: pointer;}
.icddd{width: 400px;height: 40px;background: #F4F4F4;margin-top: 30px;border-radius: 20px;}
.icddd input{width: 350px;height: 40px;background: #F4F4F4;margin-left: 20px;box-sizing: border-box;border: none;text-align: center;color: #000;cursor: pointer;}
.forget{width: 700px;padding:10px 95px;box-sizing: border-box;}
.forget ul{margin: 0 auto;}
.forget ul li{float: left;margin-left: 15px;left: 20px;text-decoration: underline;cursor: pointer;font-size: 12px;}
.line{width: 400px;height: 50px; position: relative;border-bottom: 1px solid #E2E3E3;}
.line div{position: absolute;top: 36px;left: 50%;font-size: 14px;width: 20px;height: 20px;background: #fff;padding: 3px;box-sizing: border-box;}

.stt{width: 400px;height: 40px;background: #fff;margin-top: 30px;border-radius: 20px; border: 2px solid black;}
.stt input{width: 350px;height: 40px;background: #fff;margin-left: 20px;box-sizing: border-box;border: none;text-align: center;color: #000;cursor: pointer;}
.bom{
    width: 300px;margin: 0 auto;
}
.bom ul li{float: left;margin-left: 20px;font-size: 12px;}
.bom ul li:first-child{text-decoration: underline;}